Trace number 4089663

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
Sat4j PB 2.3.6 Resolution PB16UNSAT 0.194969 0.1711

General information on the benchmark

Namenormalized-PB16/DEC-SMALLINT-LIN/pb16-16-elffers/
vertexcover-instances/normalized-vertexcover-grid4x7.opb
MD5SUMd25dc09d6745aa76300b21743aee2a6d
Bench CategoryDEC-SMALLINT-LIN (no optimisation, small integers, linear constraints)
Best result obtained on this benchmarkUNSAT
Best value of the objective obtained on this benchmark
Best CPU time to get the best result obtained on this benchmark0.000999
Has Objective FunctionNO
Satisfiable
(Un)Satisfiability was proved
Best value of the objective function
Optimality of the best value was proved
Number of variables28
Total number of constraints57
Number of constraints which are clauses56
Number of constraints which are cardinality constraints (but not clauses)1
Number of constraints which are nor clauses,nor cardinality constraints0
Minimum length of a constraint2
Maximum length of a constraint28
Number of terms in the objective function 0
Biggest coefficient in the objective function 0
Number of bits for the biggest coefficient in the objective function 0
Sum of the numbers in the objective function 0
Number of bits of the sum of numbers in the objective function 0
Biggest number in a constraint 14
Number of bits of the biggest number in a constraint 4
Biggest sum of numbers in a constraint 42
Number of bits of the biggest sum of numbers6
Number of products (including duplicates)0
Sum of products size (including duplicates)0
Number of different products0
Sum of products size0

Solver Data 

0.00/0.09	c SAT4J: a SATisfiability library for Java (c) 2004-2013 Artois University and CNRS
0.00/0.09	c This is free software under the dual EPL/GNU LGPL licenses.
0.00/0.09	c See www.sat4j.org for details.
0.00/0.09	c version PB16.v20160501
0.00/0.09	c java.runtime.name	Java(TM) SE Runtime Environment
0.00/0.09	c java.vm.name		Java HotSpot(TM) 64-Bit Server VM
0.00/0.09	c java.vm.version	19.1-b02
0.00/0.09	c java.vm.vendor	Sun Microsystems Inc.
0.00/0.09	c sun.arch.data.model	64
0.00/0.09	c java.version		1.6.0_24
0.00/0.09	c os.name		Linux
0.00/0.09	c os.version		2.6.32-71.29.1.el6.x86_64
0.00/0.09	c os.arch		amd64
0.00/0.09	c Free memory 		501472288
0.00/0.09	c Max memory 		7480803328
0.00/0.09	c Total memory 		504102912
0.00/0.09	c Number of processors 	8
0.09/0.11	c Pseudo Boolean Optimization by upper bound
0.09/0.11	c --- Begin Solver configuration ---
0.09/0.11	c org.sat4j.pb.constraints.CompetResolutionPBLongMixedWLClauseCardConstrDataStructure@2b21cc40
0.09/0.11	c Learn all clauses as in MiniSAT
0.09/0.11	c claDecay=0.999 varDecay=0.95 conflictBoundIncFactor=1.5 initConflictBound=100 
0.09/0.11	c VSIDS like heuristics from MiniSAT using a heap lightweight component caching from RSAT taking into account the objective function
0.09/0.11	c No reason simplification
0.09/0.11	c Glucose 2.1 dynamic restart strategy
0.09/0.11	c Glucose 2 learned constraints deletion strategy (LBD updated on propagation) with timer check every 1000 if the learned constraints reach increasing bounds: 5000 step 1000
0.09/0.11	c timeout=2147483s
0.09/0.11	c DB Simplification allowed=false
0.09/0.11	c Listener: org.sat4j.minisat.core.VoidTracing@7c64dc11
0.09/0.11	c --- End Solver configuration ---
0.09/0.11	c solving HOME/instance-4089663-1466031309.opb
0.09/0.11	c reading problem ... 
0.09/0.11	c  no objective function found
0.09/0.13	c ... done. Wall clock time 0.012s.
0.09/0.13	c declared #vars     28
0.09/0.13	c #constraints  57
0.09/0.13	c constraints type 
0.09/0.13	c org.sat4j.minisat.constraints.card.MinWatchCard => 1
0.09/0.13	c org.sat4j.minisat.constraints.cnf.OriginalBinaryClause => 56
0.09/0.13	c 57 constraints processed.
0.09/0.15	c starts		: 1
0.09/0.15	c conflicts		: 174
0.09/0.15	c decisions		: 186
0.09/0.15	c propagations		: 878
0.09/0.15	c inspects		: 5370
0.09/0.15	c shortcuts		: 0
0.09/0.15	c learnt literals	: 6
0.09/0.15	c learnt binary clauses	: 3
0.09/0.15	c learnt ternary clauses	: 3
0.09/0.15	c learnt constraints	: 167
0.09/0.15	c ignored constraints	: 0
0.09/0.15	c root simplifications	: 0
0.09/0.15	c removed literals (reason simplification)	: 0
0.09/0.15	c reason swapping (by a shorter reason)	: 0
0.09/0.15	c Calls to reduceDB	: 0
0.09/0.15	c Number of update (reduction) of LBD	: 12
0.09/0.15	c Imported unit clauses	: 0
0.09/0.15	c number of reductions to clauses (during analyze)	: 0
0.09/0.15	c number of learned constraints concerned by reduction	: 0
0.09/0.15	c number of learning phase by resolution	: 0
0.09/0.15	c number of learning phase by cutting planes	: 0
0.09/0.15	c speed (assignments/second)	: 32518.51851851852
0.09/0.15	c non guided choices	10
0.09/0.15	c learnt constraints type 
0.09/0.15	c org.sat4j.minisat.constraints.cnf.LearntBinaryClause => 3
0.09/0.15	c org.sat4j.minisat.constraints.cnf.LearntWLClause => 164
0.09/0.15	s UNSATISFIABLE
0.09/0.15	c Total wall clock time (in seconds): 0.042

Verifier Data 

ERROR: no interpretation found !

Watcher Data 

runsolver Copyright (C) 2010-2013 Olivier ROUSSEL

This is runsolver version 3.3.7 (svn: 2553)

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-4089663-1466031309/watcher-4089663-1466031309 -o /tmp/evaluation-result-4089663-1466031309/solver-4089663-1466031309 -C 1800 -W 1900 -M 15500 --bin-var /tmp/runsolver-exch-node105-1466009078-4983 --watchdog 1960 java -jar sat4j-pb.jar HOME/instance-4089663-1466031309.opb 

pid=9311
running on 4 cores: 1,3,5,7

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1830 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1900 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 15872000 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 15923200 KiB
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 2.00 2.01 2.00 3/194 9314
/proc/meminfo: memFree=31047036/32872528 swapFree=162364/176672
[pid=9314] ppid=9311 vsize=9292 CPUtime=0 cores=1,3,5,7
/proc/9314/stat : 9314 (java) D 9311 9314 4966 0 -1 4202496 523 0 0 0 0 0 0 0 20 0 1 0 5180880 9515008 175 33554432000 1073741824 1073778376 140735015872656 140735015855384 224922518416 0 0 4096 0 18446744072100588836 0 0 17 1 0 0 0 0 0
/proc/9314/statm: 2323 175 133 9 0 71 0

[startup+0.100163 s]
/proc/loadavg: 2.00 2.01 2.00 3/194 9314
/proc/meminfo: memFree=31047036/32872528 swapFree=162364/176672
[pid=9314] ppid=9311 vsize=9558476 CPUtime=0.09 cores=1,3,5,7
/proc/9314/stat : 9314 (java) S 9311 9314 4966 0 -1 4202496 4384 0 1 0 8 1 0 0 20 0 18 0 5180880 9787879424 6020 33554432000 1073741824 1073778376 140735015872656 140735015863792 224925876285 0 0 0 16800975 18446744073709551615 0 0 17 1 0 0 0 0 0
/proc/9314/statm: 2389619 6020 2125 9 0 2380296 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 9558476

Solver just ended.
??? exit watcher main loop
??? sigkill at end of watcher main loop
??? kill 9314 sig 9
??? end of watcher thread
Dumping a history of the last processes samples

[startup+0.100163 s]
/proc/loadavg: 2.00 2.01 2.00 3/194 9314
/proc/meminfo: memFree=31047036/32872528 swapFree=162364/176672
[pid=9314] ppid=9311 vsize=9558476 CPUtime=0.09 cores=1,3,5,7
/proc/9314/stat : 9314 (java) S 9311 9314 4966 0 -1 4202496 4384 0 1 0 8 1 0 0 20 0 18 0 5180880 9787879424 6020 33554432000 1073741824 1073778376 140735015872656 140735015863792 224925876285 0 0 0 16800975 18446744073709551615 0 0 17 1 0 0 0 0 0
/proc/9314/statm: 2389619 6020 2125 9 0 2380296 0
Current children cumulated CPU time (s) 0.09
Current children cumulated vsize (KiB) 9558476

Child status: 20
Real time (s): 0.1711
CPU time (s): 0.194969
CPU user time (s): 0.160975
CPU system time (s): 0.033994
CPU usage (%): 113.95
Max. virtual memory (cumulated for all children) (KiB): 9558476

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.160975
system time used= 0.033994
maximum resident set size= 27460
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 4766
page faults= 1
swaps= 0
block input operations= 0
block output operations= 64
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 191
involuntary context switches= 13

??? join timestamper begins
??? join timestamper ends
??? end of timestamper thread
runsolver used 0.006998 second user time and 0.002999 second system time

The end

Launcher Data 

Begin job on node105 at 2016-06-16 00:55:10
IDJOB=4089663
IDBENCH=107438
IDSOLVER=2546
FILE ID=node105/4089663-1466031309
RUNJOBID= node105-1466009078-4983
PBS_JOBID= 19902809
Free space on /tmp= 71748 MiB

SOLVER NAME= Sat4j PB 2.3.6 Resolution PB16
BENCH NAME= PB16/normalized-PB16/DEC-SMALLINT-LIN/pb16-16-elffers/vertexcover-instances/normalized-vertexcover-grid4x7.opb
COMMAND LINE= java -jar sat4j-pb.jar BENCHNAME
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-4089663-1466031309/watcher-4089663-1466031309 -o /tmp/evaluation-result-4089663-1466031309/solver-4089663-1466031309 -C 1800 -W 1900 -M 15500 --bin-var /tmp/runsolver-exch-node105-1466009078-4983 --watchdog 1960  java -jar sat4j-pb.jar HOME/instance-4089663-1466031309.opb

TIME LIMIT= 1800 seconds
MEMORY LIMIT= 15500 MiB
NBCORE= 4

MD5SUM BENCH= d25dc09d6745aa76300b21743aee2a6d
RANDOM SEED=491855933

node105.alineos.net Linux 2.6.32-71.29.1.el6.x86_64 #1 SMP Mon Jun 27 19:49:27 BST 2011

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.561
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5333.12
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.561
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 0
cpu cores	: 4
apicid		: 16
initial apicid	: 16
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 2
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.561
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 2
initial apicid	: 2
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 3
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.561
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 1
cpu cores	: 4
apicid		: 18
initial apicid	: 18
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 4
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.561
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 4
initial apicid	: 4
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.54
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 5
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.561
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 2
cpu cores	: 4
apicid		: 20
initial apicid	: 20
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 6
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.561
cache size	: 8192 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 6
initial apicid	: 6
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.55
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:

processor	: 7
vendor_id	: GenuineIntel
cpu family	: 6
model		: 26
model name	: Intel(R) Xeon(R) CPU           X5550  @ 2.67GHz
stepping	: 5
cpu MHz		: 2666.561
cache size	: 8192 KB
physical id	: 1
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 22
initial apicid	: 22
fpu		: yes
fpu_exception	: yes
cpuid level	: 11
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm ida tpr_shadow vnmi flexpriority ept vpid
bogomips	: 5332.58
clflush size	: 64
cache_alignment	: 64
address sizes	: 40 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:       32872528 kB
MemFree:        31047044 kB
Buffers:           89824 kB
Cached:           344088 kB
SwapCached:            0 kB
Active:           595648 kB
Inactive:         348072 kB
Active(anon):     512616 kB
Inactive(anon):        0 kB
Active(file):      83032 kB
Inactive(file):   348072 kB
Unevictable:      176672 kB
Mlocked:          162364 kB
SwapTotal:      67108856 kB
SwapFree:       67108856 kB
Dirty:               844 kB
Writeback:             0 kB
AnonPages:        686788 kB
Mapped:            21920 kB
Shmem:               204 kB
Slab:             573244 kB
SReclaimable:      16920 kB
SUnreclaim:       556324 kB
KernelStack:        1576 kB
PageTables:         5732 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    83545120 kB
Committed_AS:     816592 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      346412 kB
VmallocChunk:   34341988032 kB
HardwareCorrupted:     0 kB
AnonHugePages:    499712 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:        7552 kB
DirectMap2M:    33538048 kB

Free space on /tmp at the end= 71748 MiB
End job on node105 at 2016-06-16 00:55:10